Fuse.



R. H. S. BACON 611. H. MANSELL.

FUSE.

APPLICATION FILED APR.7, 1915.

1,145,051 Patented July 6, 1915.

f/Zifmssw REGINALD HUGH SPENCER BACON AND JOHN HERBERT ENGLAND,ASSIGNORS TO COVENTRY, ENGLAND.

MANSELL, OF COVENTRY,

'II-IE COVENTRY ORDNANCE WORKS, LIMITED, OF

Specification of Letters Patent.

Patented July 6, 1915.

Application filed April 7, 1915. Serial N 0. 19,842.

To all whom it may concern Be it known that we, REGINALD HUGH SPENCERBACON and JOHN HERBERT MAN- sELL, subjects of the King of Great Britain,both residing at The Coventry Ordnance lVorks, Coventry, in the countyof Warwick, England, have invented new and useful Improvements in Fuses,of which the following is a specification.

This invention relates to means for pre Y venting premature ignition ofthe time or percussion arrangements in shell fuses from affecting thedetonating charge carried by the fuse.

Our invention is illustrated by the accompanying drawing in which Figure1 is a longitudinal section through a fuse. Figs. 2 and 3 are sectionaldetail views.

a is the body of the fuse containing time rings 7) and a percussionpellet c of ordinary construction. Into the body screws a strong steelgain (Z into which gain is screwed a diaphragm e. In front of this is acharge f of high explosive such as trinitrophenylmethylnitramin ortetryl as it is more conveniently called, in the middle of which arepellets g of powder. In front of this is a wad h which is kept in placeby the screw plug 21 through which is formed a passage to enable theflash from the percussion or time arrangements to reach the pellets g.In front of this again is another plug containing a centrifugal safetybolt 70 in front of which is a copper cup Z which normally closes thepassage. The rim of this cup is flared outward and fits a seating m onor near the mouth of the passage n and the body of the cup, the exteriorof which is cylindrical, lies within the passage. The interior of thecup is conical so that the bottom is the thickest part and the thicknessof the walls decreases toward the top. In front of the cup is a thinbrass disk 0 which lies in the enlarged mouth of the passage. Shouldeither the time or percussion arrangements be prematurely ignited thepassage n is completely blocked by the cup which is prevented frommoving rearward along the passage by the bolt 70. When, however, theshell is fired centrifugal action causes the bolt to move out of thepassage, subsequently the pressure set up by the time or percussionarrangements deforms the cup and forces it into the large part of thepassage in which the bolt is normally situated and the flash is thenenabled to pass to the charge f. Re hind the diaphragm e is a largercharge of high explosive such as tetryl, the front portion being formedof loose explosive 79 while the rear portion is composed of compressedexplosive q, the two being separated by a wad r and held in place by aplug 8.

lVhat we claim is 1. In a shell fuse the combination of a centrifugalbolt adapted normally to close a passage leading to a charge ofexplosive and a cup having a flared rim fitting a seating in the wall ofthe passage.

2. In a shell fuse the combination of a centrifugal bolt adaptednormally to close a passage leading to a charge of explosive and acopper cup having a flared rim fitting a seating in the wall of thepassage.

3. In a shell fuse the combination of a centrifugal bolt adaptednormally to close a passage leading to a charge of explosive and a cupof which the bottom is the strongest portion and which has a flared rimfitting a seating in the wall of the passage.

REGINALD HUGH SPENCER BACON. JOHN HERBERT MANSELL.

lVitnesses WILLIAM J. DAVIS, ARTHUR B. INSTONE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

